[11] On 17 May 400,000 doses of the AstraZeneca vaccine that were ordered through COVAX arrived in the midst of Taiwan's largest COVID-19 pandemic.

[12] On 31 May Taiwan Centers for Disease Control announced that 10 million doses of domestically produced vaccines (Medigen and United Biomedical) had been pre-reserved.

[19] On 22 June the government of Lithuania announced that it was donating 20,000 doses of AstraZeneca vaccine in September.

[23] On 12 July Foxconn Technology and TSMC announced that they had reached final agreements with Fosun Pharma to each purchase 5 million doses of the Pfizer-BioNTech COVID-19 vaccine.

Despite signing the deal with Shanghai Fosun Pharmaceutical Group, an agreement has been made that the Pfizer-BioNTech COVID-19 vaccines would be manufactured and shipped directly from Germany.

Combined with the previous two, the Japanese government has donated a total amount of 3.37 million doses.

[21] On 19 July the Taiwanese government granted Emergency Usage Authorization (EUA) to the COVID-19 vaccine developed by Medigen Biotechnology Corp.

[27] On 21 July the Tzu Chi Foundation announced they had reached final agreements and signed a deal with Fosun Pharma to purchase 5 million doses of Pfizer–BioNTech COVID-19 vaccine.

Combined with the previous two deals signed by Foxconn Technology and TSMC, the three companies would acquire a total of 15 million doses of the Pfizer-BioNTech COVID-19 vaccine for the Taiwanese government.

[32] On 2 August Taiwan's Food and Drug Administration (TFDA) finished the inspection of the first 4 batches of the local made Medigen COVID-19 vaccine.

[38] On the same day, Taiwan's Food and Drug Administration (TFDA) also finished the inspection of 4 additional batches of the Medigen COVID-19 vaccine.

[39] In the end of August and start of September, Taiwan have received a few additional batches of COVID-19 vaccines from both direct pharmaceutical orders and donations.

[40][41] On 29 August, Taiwan received 30,000 doses of Moderna COVID-19 vaccine that were donated by the Czech government.

[42] On 2 September, Taiwan received 930,000 doses of Pfizer–BioNTech COVID-19 vaccine donated by Foxconn, TSMC, and Tzu-chi Foundation.

On 3 September, Japan announced that it has finalize plans to donate another batch of Oxford-AstraZeneca COVID-19 vaccine to Taiwan.

Slovakia, following Lithuania, Czech Republic, and Poland, became the fourth European country to donate COVID-19 vaccines to Taiwan.

The CECC announced later that same day that the Oxford-AstraZeneca COVID-19 vaccine donated by Slovakia combined with other recent arrivals will all be used for second dose administration.

[55][56] On the same day, Taiwan received another 656,000 doses of the Oxford-AstraZeneca COVID-19 vaccine directly from the pharmaceutical manufacturer.

[61] On 6 October, Terry Gou, founder of Foxconn, announced that the third delivery Pfizer-BioNTech COVID-19 vaccine, with 1.6 to 1.8 million doses, will be delivered in the following week.

On 1 November, Taiwan received its second donation of Moderna COVID-19 vaccine from the United States with 1.5 million doses.

[74] On 25 November, the percentage of Taiwanese citizens who are fully vaccinated against COVID-19 has reached 50%, nearing the Taiwan Centers for Disease Control's goal of 60% at the end of the year and the potential criteria for loosening border restrictions.

[75] On 30 November, in order to prevent the spread of the latest COVID-19 Omicron variant, the Taiwan Centers for Disease Control announced COVID-19 booster shot policy details.

Everyone above the age of 18 is encouraged to get a COVID-19 booster shot six months after receiving their second dose, with no restriction on vaccine brands.

[95]- non-medical personnel hired in medical or health affiliated workspace (including public quarantine centers) - officials in charge of vaccine or health equipment distribution - CIQS border patrols (custom, immigration, quarantine, and security) - fire fighters and police - members of the Republic of China Armed Forces - quarantine transportation personnel - private quarantine center personnel - non-CIQS border patrols - athletic representatives - dialysis patients and affiliated helpers - other rehabilitation institutions - were prioritized to be vaccinated with the Moderna COVID-19 vaccine[103] - non-front-line affiliated police officials - military police - transportation and storage affiliated personnel - education and school affiliated personnel - kindergarten and nursery center personnel - news media front line personnel - any native ethnicity individuals between and include the age of 55 to 64 - also includes those with rare medical conditions or serious medical conditions On 6 July, the Central Epidemic Command Center (CECC) announced the creation of Taiwan Domestic COVID-19 Vaccination Appointment Platform Archived 9 October 2021 at the Wayback Machine, allowing the digitalization of COVID-19 vaccination sign up and appointments.

In the second step, the system would send a message to individuals through their phone number and notify them to make an appointment.

In the third step, individuals can make their appointment on the platform, the vaccination app, or at the convenient store, pharmacy, or dedicated health centers.

Lastly, in the fourth step, individuals would be required show up on-time for their appointment to be vaccinated.

[106] On 27 August 2021, Taiwan's CECC announced that preference for the Pfizer-BioNTech COVID-19 vaccine would be open for registration on the platform.